Open or not open, that is the stupid question.

You could install indicator-virtualbox to launch virtualbox guest OS. https://launchpad.net/indicator-virtualbox/ http://indicator-virtualbox.en.uptodown.com/ubuntu Wish this helps. regards, Stanley Huang

If you want to allow remote display in Ubuntu 12.04, you have do the following steps: 1. remove "-nolisten tcp" from /etc/X11/xinit/xserverrc #[before] $ cat /etc/X11/xinit/xserverrc exec /usr/bin/X -nolisten tcp "$@" #[after] $ cat /etc/X11/xinit/xserverrc exec /usr/bin/X "$@" 2. add "xserver-allow-tcp=true" into /etc/lightdm/lightdm.conf #[before] [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter #[after] [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter xserver-allow-tcp=true 3. restart X 4. allow remote x connection local> xhost + 5. ssh remote server and set DISPLAY local> ssh remote_server remote> export DISPLAY=local_ip:0.0 remote> xclock in 10.04, you have to change above step 2 as the following: 2-10.04: add "DisallowTCP=false" in "security" section. #[before] $ cat /etc/gdm/custom.conf [daemon] TimedLoginEnable=false AutomaticLoginEnable=true TimedLogin=stanley Aut...

Allow VirtualBox guest OS to create symbolic link file in host shared folder: $ VBoxManage setextradata "VM Name" VBoxInternal2/SharedFoldersEnableSymlinksCreate[absolution path for shared folder] 1 $ VBoxManage setextradata "VM Name" VBoxInternal2/SharedFoldersEnableSymlinksCreate/[shared name] 1 Ex. $ VBoxManage setextradata "MyVM" VBoxInternal2/SharedFoldersEnableSymlinksCreate/home/stanley/shared_folder 1 $ VBoxManage setextradata "MyVM" VBoxInternal2/SharedFoldersEnableSymlinksCreate/shared_name 1 And you could verify it by command: VBoxManage getextradata "MyVM" enumerate After setup, you have to shutdown VM (not restart) and boot up it again. Wish this helps. regards, Stanley Huang

Here are some useful tools for Mac OS. $ apt-cache search hfs hfsplus - Tools to access HFS+ formatted volumes hfsutils - Tools for reading and writing Macintosh volumes libhfsp-dev - Library to access HFS+ formatted volumes libhfsp0 - Shared library to access HFS+ formatted volumes squashfs-tools - Tool to create and append to squashfs filesystems squashfs-tools-dbg - Tool to create and append to squashfs filesystems (debug) dmg2img - Tool for converting compress dmg files to hfsplus images hfsprogs - mkfs and fsck for HFS and HFS+ file systems hfsutils-tcltk - Tcl/Tk interfaces for reading and writing Macintosh volumes libhfstdc++6-4.6-dbg-armel-cross - GNU Standard C++ Library v3 (debugging files) libhfstdc++6-armel-cross - GNU Standard C++ Library v3 (hard float ABI) rdiff-backup-fs - Fuse filesystem for accessing rdiff-backup archives $ sudo apt-get -y install hfsplus hfsutils hfsprogs $ sudo apt-get -y install dmg2img Other packages for hfs: $ apt-cache search s...

Python with vim: http://wiki.python.org/moin/Vim Wish this helps. regards, Stanley Huang

Sample for show ansi color in terminal by Python script. #!/bin/env python import os print os.popen('echo "\033[31m\033[43mHello World!\033[0m"').read() print '\033[31m\033[43m' + 'Hello World!' + '\033[0m' Wish this helps. regards, Stanley Huang

If you want to use the concept "connection pool" for ssh, you could try the following sample. #!/bin/bash # # You might need to modify sshd_config with the following attributes: # # MaxStartup 200 # MaxSessions 200 # [ "$1" == "-d" ] && set -vx && shift control_master="$1" && [ "$control_master" != "false" ] && control_master=true username="$2" && [ -z $username ] && username=stanley remote_host="$3" && [ -z $remote_host ] && remote_host=127.0.0.1 cmd1="$4"&& [ -z $cmd1 ] && cmd1=ls control_master_option="" client_cmd="/tmp/a.sh" buildControlMaster() { if $control_master then ssh -N -o "ControlMaster auto" -o "ControlPath ~/.ssh/master-$username@$remote_host" $username@$remote_host & fi } createClientCmd() { mkdir -p /tmp/add rm /tmp/add/* $client_cmd if $c...

You could customize your vim environment by this tools. http://yoursachet.com MEMO: 1. comment "filetype plugin indent on" and "autoindent" to avoid auto indent mess up the indent during past "Python" script code. 2. add, :vmap <C-C>"+y, to enable Ctrl-C to copy text into clipborad. 2-1. $ vim --version | grep xterm_clipboard 2-2. $ sudo apt-get -y install vim-gtk 2-3. $ sudo update-alternatives --config vim 3. add the following settings to set different tab definition with different extension name, autocmd FileType py :setlocal sw=4 ts=4 sts=4 autocmd FileType sh :setlocal sw=2 ts=2 sts=2 Wish this helps. regards, Stanley Huang

Memo it: 1. openWNS: www.openwns.org/Wiki 2. ns-3: www.nsnam.org , ns-3 provides python API to use. Wish this helps. regards, Stanley Huang

Use command: :help :all :help argument-list Wish this helps. regards, Stanley Huang

You could use serval ways to do that. 1. :tabe => tab edit. You use tabn/tabN/tabn[#] to change tab 2. :vs => virtical split. Back to command mode (press ESC key) then you use ctrl-w to change window 3. :sp => horizontal split. Back to command mode (press ESC key) then you use ctrl-w to change window To get more help, use commands: :help :tabe :help :vs :help :sp Wish this helps. regards, Stanley Huang